# field.file

Files picked to upload: a document, an avatar, a CSV to import. Pass accept and multiple as on <input type="file">

Component: [`<Field>`](https://www.prongs.dev/docs/components/field.md) · Renders: `<input type="file">` · Profile: [UI](https://www.prongs.dev/docs/intents/ui.md) · Comes from: starter

## Example

```tsx
<Field intent="field.file" label="Attachment" accept=".pdf,image/*" hint="PDF or image, up to 10 MB." />
```

Code that says `upload`, `file`, `attach`, `import` points here. `prongs check` warns when an element with this intent has a handler or label that points somewhere else.

## Choosing between neighbours

Find the row that describes your element, and use the intent on the right.

| If it is for… | Use |
|---|---|
| Files picked to upload: a document, an avatar, a CSV to import. Pass accept and multiple as on <input type="file"> | `field.file` (this page) |
| A link to a file somewhere else | [`field.url`](https://www.prongs.dev/docs/intents/field/url.md) |

## Connections

Declared in the registry, both directions. Where an intent is used in your own code is something check and the gallery see; this site has no app code.

- Built from: [`input.default`](https://www.prongs.dev/docs/intents/ui.md#input-default)

## For registry authors

**Starter intents.** These are the intents `prongs add` puts in your registry, shown in this site’s theme. Yours are your own `registry.ts`: rename, restyle and add to them, and see them with `prongs add gallery`.

What this intent is built from and its entry in `components/prongs/registry.ts`. You only need this to change how it looks or to add an intent like it.

How field.file resolves, and its definition

Each layer adds to the one before it; a later class wins over an earlier one that sets the same thing.

- [`input.default`](https://www.prongs.dev/docs/intents/ui.md#input-default) — Bordered input box

  ```
  w-full min-w-0 rounded-md border border-input bg-background pl-3
  pr-3 py-2 text-base text-foreground
  placeholder:text-surface-muted focus-visible:outline-none
  focus-visible:ring-2 focus-visible:ring-ring
  disabled:cursor-not-allowed disabled:opacity-50
  aria-invalid:border-destructive
  ```

- `field.file` (this page) — Files picked to upload: a document, an avatar, a CSV to import. Pass accept and multiple as on <input type="file">

Final classes

```
w-full min-w-0 rounded-md border border-input bg-background pl-3
pr-3 py-2 text-base text-foreground
placeholder:text-surface-muted focus-visible:outline-none
focus-visible:ring-2 focus-visible:ring-ring
disabled:cursor-not-allowed disabled:opacity-50
aria-invalid:border-destructive
```

Element behaviour

```
{ type: 'file' }
```

Definition

```ts
'field.file': {
  kind: 'semantic',
  description: 'Files picked to upload: a document, an avatar, a CSV to import. Pass accept and multiple as on <input type="file">',
  refs: ['input.default'],
  keywords: ['upload', 'file', 'attach', 'import'],
  binding: { behavior: { type: 'file' } },
  notFor: [{ context: 'a link to a file somewhere else', instead: 'field.url' }],
},
```